Fig. 1

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Map of the Garonne drainage in the Val d'Aran (Catalonia, Spain) and location of the sampling sites (see codes in Tab. 1) showing the distribution area of Pyrenean sculpin Cottus hispaniolensis: (○) indicates sites with fish information data and (●) indicates sites where C. hispaniolensis is positively recorded. Physical barriers (weirs and dams) are marked as lines perpendicular to the river.

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